E: 12:function: Instance of 'unicode' has no 'looower' member
W:  4: Relative import 'func_w0401', should be 'input.func_w0401'
W:  5: Used builtin function 'filter'. Using a list comprehension can be clearer.
W:  5: Used builtin function 'map'. Using a list comprehension can be clearer.
